2008 RENAULT SCENIC child lock

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-8
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-8V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
The ACCESS/SAFETY function is divided into three sub-functions: Access, Protection and Starting.
The maximum number of Renault cards which can be programmed on the vehicle is 4. There is no master Renault
card.
1 ACCESS/SAFETY FUNCTION
1.1 SUB-FUNCTION: ACCESS
The Megane II allows:
–locking/unlocking by pressing the buttons on the Renault card (remote control function),
–locking/unlocking by pressing the central door locking button,
–locking via the Renault Anti-Intruder Device (RAID),
–automatic relocking.
If the vehicle is fitted with the hands-free function:
–hands-free unlocking of the entire vehicle, by cutting the optical beam on one of the door handles,
–hands-free boot-only unlocking by pressing the boot opening switch,
–hands-free locking (by pressing the handle closure switch or the switch located in the boot badge).
If the vehicle is fitted with:
–electric child safety locking,
–deadlocking,
–selective opening element unlocking,
–the valet card function.
1.1.1 procedure of locking/unlocking by pressing the buttons on the Renault card:
1Opening element locking motors
2Encrypted 433 MHz RF connection (315 Mhz in Japan)
3Card button pressed

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-15
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-15V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.1.6 Principle of Electric Childproof Locking:
The UCH controls the rear door locks to prevent them from being opened by means of the interior door handles and
inhibits operation of the rear electric window switches.
The switch statuses and the activation of electric childproof locks can be viewed using the following statuses:
–ET233 Child safety lock switch,
–ET159 Rear left-hand door child safety lock,
–ET160 Rear right-hand door child safety lock.
The configuration Child safety lock can be read using configuration LC035 Child safety lock and modified (see
Configurations and programming) using the specific command SC016 Child safety lock (Vdiag 4C, 4D, 4F and
50).
Fault finding can be performed on the child safety lock switch indicator light using command AC076 Child safety
lock indicator light.
1.1.7 Principle of Deadlocking:
The UCH controls the door locks to prevent unlocking via the interior handles. This function is activated by pressing
and holding (+ 2 seconds) the Renault card's locking button or by pressing the door locking button twice.
The direction indicators flash rapidly three times for deadlocking (in addition to the two flashes for locking).
For this function to operate, the vehicle must have deadlocking (2 motors) and configuration LC003 Deadlocking
must be WITH (see Configurations and programming). Deadlocking is configured using CF009 Deadlocking.
The source of the last deadlocking activation/deactivation can be viewed using statuses ET088 Deadlocking
activation source and ET090 Deadlocking deactivation source.
It is impossible to deadlock the vehicle if the + accessories feed is active, if the lights are switched on or if the hazard
warning lights are activated.
1.1.8 The valet card function, specific to certain countries (e.g. Mexico):
This function controls the valet card option which enables vehicles fitted with it to separately control unlocking of the
driver's door, the boot, or the passenger doors and the glovebox.
When the vehicle is electrically pre-equipped with the valet option and this option has been configured, the cards can
be used in two different customer modes. The "master" cards can unlock all the opening elements, but the "valet"
cards cannot unlock the glovebox, the boot and the passenger opening elements. They can only start the vehicle,
lock the whole vehicle, and unlock the driver's door. The function is configured with CF085 Valet card function
using the specific command SC008 UCH type. To access CF085, configure CF036 Selective opening element
opening to WITH.
To check that this function has been configured correctly, use LC016 Card valet function.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-60
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-60V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
6/ CHILD SAFETY LOCK CONFIGURATION PROCEDURE (SC016)
This procedure will enable the child safety system, if fitted to the vehicle, to be configured for optimum running
during the replacement of a UCH.
–Click on the Repair mode and in the Programming menu,
–confirm the line SC016 Child safety,
–follow the procedure and enter the following data:
–CF104 Child safety lock (WITH or WITHOUT),
–confirm and follow the procedure,
–finish by confirming and clearing the stored faults. The child safety function is configured.
There are two types of wiring: single or double input.
–Single input: on vehicles manufactured before 10/01/2005.
1Rear left-hand door
2Rear right-hand door

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-67
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-67V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
UCH configurations (continued):
T.O*: Sunroof.Configuration
readingConfigurationName of
configurationChoice of
configurationVdiag
LC017Tyre Pressure Monitor
FunctionSC008 UCH typeWITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC018Hazard warning lights
switched on by ABS CF024WITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC019Rear screen wiper park
position controlAutomatic
configurationWITH/WITHOUT 44, 48, 4C, 4D
LC020Factory fitted perimeter

protection SC008 UCH typeWITH/WITHOUT 4C, 4D, 4F and 50
LC021Type of windscreen
SC008 UCH typeTINTED/HEAT
INSULATING44, 48, 4C, 4D, 4F
and 50
LC023 Engine type CF028F ENGINE/K
ENGINE/M
ENGINE44, 48, 4C, 4D, 4F
and 50
LC025See-me-home lighting CF032WITH/WITHOUT 44, 48, 4C, 4D
LC029 Selective door opening SC008 UCH typeWITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC030Heating resistor type SC008 UCH typeNONE/1000 W/
1800 W 44, 48, 4C, 4D, 4F
and 50
LC035Child safety lockSC016 Child safety
lockWITH/WITHOUT 4C, 4D, 4F and 50
Automatic
configurationWITH/WITHOUT 44 and 48
LC041New vehicle storage modeVP016 ACTIVE/
INACTIVE 4F and 50
LC044 Rain/light sensor SC008 UCH typeWITH/WITHOUT 4F and 50
LC064 Rear screen wiper CF166 WITH/WITHOUT 4F and 50
LC070One-touch window(s)/
sunroof SC008 UCH typeWITH/WITHOUT 4F and 50
LC122Rear access aerialsCF224WITH/WITHOUT 50

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-68
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-68V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
Specific UCH commands:
Specific commands Name of Specific command Vdiag
SC001Reading the valve set and stored codes 44, 48, 4C, 4D, 4F and 50
SC002Programming the 4 valve codes 44, 48, 4C, 4D, 4F and 50
SC003Spare 44, 48, 4C, 4D, 4F and 50
SC004UCH programming 44, 48, 4C, 4D, 4F and 50
SC005Card check 44, 48, 4C, 4D, 4F and 50
SC006Card allocation 44, 48, 4C, 4D, 4F and 50
SC008Type of UCH 44, 48, 4C, 4D, 4F and 50
SC016Child safety lock 4C, 4D, 4F and 50
3

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault summary table
87B
87B-70
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault summary table
87B
87B-70V9 MR-372-J84-87B000$258.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
Tool fault Diagnostic tool title Vdiag
DF023Driver's side front external aerial circuit
44, 48, 4C, 4D, 4F, 50 DF024Passenger side front external aerial circuit
DF025Driver's side rear external aerial circuit
DF026Passenger side rear door external aerial circuit
DF027External temperature sensor circuit
DF029Steering lock circuit
DF030Anti-locking line
DF031One-touch window connection
DF032Tailgate external aerial
DF033Driver-side external aerial(s)
DF034Passenger-side external aerial(s)
DF035Internal aerial circuit
DF072Child safety lock circuit
4D, 4F, 50 DF073Right-hand door child safety lock circuit
DF074Left-hand door child safety lock circuit
DF075Timed supply circuit
DF147Steering column lock safety circuit44, 48, 4C, 4D, 4F, 50
DF210Rear access aerial configuration50
DF319Front left-hand wheel pressure
44, 48, 4C, 4D, 4F, 50 DF320Front right-hand wheel pressure
DF321Rear right-hand wheel pressure
DF322Rear left-hand wheel pressure

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B -109
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B -109V9 MR-372-J84-87B000$344.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF072
PRESENT
OR
STOREDCHILD SAFETY LOCK CIRCUIT
CC: Short circuit
CO: Open circuit
CO
CC
NOTESIf DF074 Left-hand door child safety lock circuit and
DF073 Right-hand door child safety lock circuit are
present, reconfigure the child safety lock function using the
special command SC016 Child safety lock (see
Configurations and programming).
Use Wiring Diagrams Technical Note for MEGANE II or
SCENIC II.
Check the condition and connection of the child safety lock switch connector.
If the connector is faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check for + 12 V on connection BPT of component 135.
Check for + after ignition feed on connection AP43 of component 135.
If the connection is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check for earth on connection MAM of component 135.
If the connection(s) are faulty and there is a repair method (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check the condition and connection of connector PE1 on the UCH.
If the connector is faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check the insulation and continuity of the following connections:
●Connection code 20AL,
●Connection code 20AP43.
Between components 645 and 135.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF072 /UCH_V48_DF072/UCH_V4C_DF072/
UCH_V4D_DF072/UCH_V4F_DF072/UCH_V50_DF072

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-110
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-110V9 MR-372-J84-87B000$344.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF073
PRESENT
OR
STOREDRIGHT-HAND DOOR CHILD SAFETY LOCK CIRCUIT
CC: Short circuit
CO: Open circuit
CO/
CC
NOTESIf DF072 Child safety lock circuit is present, reconfigure
the child safety function using special command SC016
Child safety lock (see Configurations and
programming).
Use Wiring Diagrams Technical Note for MEGANE II or
SCENIC II.
Check the condition and connection of the child safety lock switch connector.
If the connector is faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check for + 12 V on connection BPT of component 135.
Check for + after ignition feed on connection AP43 of component 135.
If the connection(s) are faulty and there is a repair method (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check for earth on connection MAM of component 135.
If the connection is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check the condition and connection of the UCH PE1 and PP2 connectors.
If the connector is faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check the insulation and continuity of the following connection:
●Connection code 20AL between components 645 and 135.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF073 /UCH_V48_DF073/UCH_V4C_DF073/
UCH_V4D_DF073/UCH_V4F_DF073/UCH_V50_DF073